Switch from placeholder to prompt API for QuickPick feedback

Co-authored-by: alexr00 <38270282+alexr00@users.noreply.github.com>

Author: Copilot

package.json

@@ -34,6 +34,7 @@
 		"languageModelToolResultAudience",
 		"markdownAlertSyntax",
 		"quickDiffProvider",
+		"quickPickPrompt",
 		"remoteCodingAgents",
 		"shareProvider",
 		"tokenInformation",

src/@types/vscode.proposed.quickPickPrompt.d.ts

@@ -0,0 +1,27 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+declare module 'vscode' {
+
+	// https://github.com/microsoft/vscode/issues/78335
+
+	export interface QuickPick<T extends QuickPickItem> extends QuickInput {
+		/**
+		 * Optional text that provides instructions or context to the user.
+		 *
+		 * The prompt is displayed below the input box and above the list of items.
+		 */
+		prompt: string | undefined;
+	}
+
+	export interface QuickPickOptions {
+		/**
+		 * Optional text that provides instructions or context to the user.
+		 *
+		 * The prompt is displayed below the input box and above the list of items.
+		 */
+		prompt?: string;
+	}
+}

src/github/issueOverview.ts

@@ -448,18 +448,18 @@ export class IssueOverviewPanel<TItem extends IssueModel = IssueModel> extends W
 			}));
 			quickPick.selectedItems = quickPick.items.filter(item => item.picked);
 
-			// Update placeholder based on selection
-			const updatePlaceholder = () => {
+			// Update prompt based on selection
+			const updatePrompt = () => {
 				if (quickPick.selectedItems.length === 0) {
-					quickPick.placeholder = vscode.l10n.t('No labels selected');
+					quickPick.prompt = vscode.l10n.t('No labels selected');
 				} else {
-					quickPick.placeholder = vscode.l10n.t('Select labels');
+					quickPick.prompt = undefined;
 				}
 			};
-			updatePlaceholder();
+			updatePrompt();
 
 			quickPick.onDidChangeSelection(() => {
-				updatePlaceholder();
+				updatePrompt();
 			});
 
 			quickPick.busy = false;
@@ -539,19 +539,19 @@ export class IssueOverviewPanel<TItem extends IssueModel = IssueModel> extends W
 			quickPick.items = await getAssigneesQuickPickItems(this._folderRepositoryManager, undefined, this._item.remote.remoteName, this._item.assignees ?? [], this._item);
 			quickPick.selectedItems = quickPick.items.filter(item => item.picked);
 
-			// Update placeholder based on selection
-			const updatePlaceholder = () => {
+			// Update prompt based on selection
+			const updatePrompt = () => {
 				const selectedAssignees = quickPick.selectedItems.filter(item => item.user);
 				if (selectedAssignees.length === 0) {
-					quickPick.placeholder = vscode.l10n.t('No assignees selected');
+					quickPick.prompt = vscode.l10n.t('No assignees selected');
 				} else {
-					quickPick.placeholder = vscode.l10n.t('Select assignees');
+					quickPick.prompt = undefined;
 				}
 			};
-			updatePlaceholder();
+			updatePrompt();
 
 			quickPick.onDidChangeSelection(() => {
-				updatePlaceholder();
+				updatePrompt();
 			});
 
 			quickPick.busy = false;

src/github/quickPicks.ts

@@ -249,19 +249,19 @@ export async function reviewersQuickPick(folderRepositoryManager: FolderReposito
 
 	await updateItems((teamsCount !== 0 && teamsCount <= quickMaxTeamReviewers) ? TeamReviewerRefreshKind.Try : TeamReviewerRefreshKind.None);
 
-	// Update placeholder based on selection
-	const updatePlaceholder = () => {
+	// Update prompt based on selection
+	const updatePrompt = () => {
 		const selectedReviewers = quickPick.selectedItems.filter(item => item.user);
 		if (selectedReviewers.length === 0) {
-			quickPick.placeholder = vscode.l10n.t('No reviewers selected');
+			quickPick.prompt = vscode.l10n.t('No reviewers selected');
 		} else {
-			quickPick.placeholder = defaultPlaceholder;
+			quickPick.prompt = undefined;
 		}
 	};
-	updatePlaceholder();
+	updatePrompt();
 
 	quickPick.onDidChangeSelection(() => {
-		updatePlaceholder();
+		updatePrompt();
 	});
 
 	quickPick.onDidTriggerButton(() => {